Lock.



I N0.74s,475. Q P TENTBD NOV. 10, 1903.

- L. PAUST.

LOCK.

APPLIOATIQN FILED 00120. 1902.

NO MobnL.

V Liar,"

NITED STATES Patented November 10, 1903.

PATENT FFICE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 743,475, datedNovember, 10, 1903.

Application filed October 20, 1902. Serial No. 128,054. (No model.)

To all whom it may concern:

Be it known that I, LEVIN FAUs'r, a citizen of the United States ofAmerica, residing at Rockford, in the county of Winnebago and State ofIllinois, have invented certain new and useful Improvements in Locks, ofwhich the following is a specification.

My invention relates to the class of locks commonly known in the locktrade as mortise-locks. Its object is the production of a strongserviceable lock of the simplest and compactest construction possible;and it consists, essentially, of a lock comprising a supporting-basehaving a bolt-braking lug thereon, of a bolt provided with spring-armsrigidly connected thereto embracing the lug on the supporting-base andadapted to hold the bolt projected through the spring engagement of itsarms with said lug.

Referring to the accompanying drawings, which form a part of thisspecification, Figures 1 and 2 are side views of counterpart plates thatform the supporting-base of the lock. Fig. 3 is a like view of the boltof the lock. Fig. 4 is a side view of the key to the same. Fig. 5 is aview showing the relative positions of the key and bolt as the formerisabout to throw the latter outward. Fig. 6 is a view showing the relativepositions of the key and bolt as the former is about to throw the boltinward. Fig. 7 is a view of the outer end of the look.

In constructing my look I prefer to have the base thereof formed of twopieces that are longitudinal segments of a cylinder and counterparts ofeach other and to have its bolt of the same length and width as andinterposed between the two pieces composing the base, so that thecompleted lock will be cylindrical in transverse section, as indicatedin the drawings. The above-described form and arrangement of parts,however, may 0bviously be varied without departing from the spirit andscope of my invention. I therefore do not wish to be understood asintending to limit the scope thereof to a lock having the precise formand arrangement of parts hereinbefore mentioned.

Like letters of reference indicate corresponding parts throughout theseveral views. A and B are two plates of metal in form longitudinalsegments of a cylinder and counterparts of each other. .The plate A has.a transverse bolt-braking lug or hearing A, which projects and fitssomewhat tightly into a corresponding socket B in the plate B and servesto secure the plates A and B together to form the supporting-base of thelook. A second transverse lug A extending from the plate A into acorresponding socket B in the plate B, may also be employed, if sodesired; but it has no special functions beyond aiding insecurelyconnecting the parts composing the base and the bolt of the locktogether before it is seated in its mortise preparatory to use and.serving to stop'the travel of the bolt inward in case the lock-mortiseshould chance to be bored too deep.

0 is a bolt having the same length and width as the plates A and B,composing the supporting-base of the lock. The bolt 0 is so furcated asto bestride and frictionally contact the bolt-braking lug or hearing Ain the lock-base, the inner edges of the furcations' O and (3 thereofapproaching each othersay between the points 0 and C and O and Othereom-so as to cause such furcations to act as springs and pressinward against the lug A sufficiently to brake and thereby control thebolt 0. To the same end separate springs are generally employed in otherlooks. The furcation O has a rack C on its inner edge whereby tolongitudinally reciprocate the bolt 0 against the frictional resistancebetween the same and the boltbraking lug A.

0 represents stops on the bolt 0 to control its outward throw.

D is a key provided with a plurality of radial bits D, adapted to engagethe rack C on the furcated bolt C and therethrough longitudinallyreciprocate the same.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a lock, the combination of a supporting-base having a bolt-brakinglug thereon, of a bolt provided with spring-arms rigidly connectedthereto embracing the lug on the supporting-base, and adapted to holdthe bolt,

projected, through the spring engagement of its arms with said lug.

2. In a lock, in combination, a supportingbase having a bolt-braking lugtherein, a fur- I width as and included between the parts of the base,and connecting means, between the parts of the base, frictionallycontacting and controlling the bolt, the supporting-base and bolt takentogether being cylindrical in transverse section, substantially as andfor the purpose specified.

4. In a lock, in combination, the supporting-base, composed of the-partsA and B, the former being provided with the bolt-braking lug A and stopand connecting'lug A and the latter with corresponding engaging socketsB and E the furcated bolt 0, having a rack C on the inner edge of onefur-cation thereof and bestriding and frictionally contacting thebolt-brakinglug A, a key provided with a plurality of radial bitsadapted to engage the rack G on the furcated bolt 0, and therethroughoperate such bolt, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LEVIN FAUST.

Witnesses:

L. L. MORRISON, NELLIE BUNKER.

